Safety device for gas-stoves.



No. 803,396. PATENTED 00131, 1905. R. R. GALLAN.

SAFETY DBVIGE POR GAS STOVES.

APPLIUATIOI FILED HAY 7, 1904.

@Cim 2, @a gm b wituesss: gun Quin r:

f mm1 09m/WM UNITED sTATEs PATENT oEEioE.

RICHARD R. CALLAN, `OF DETROIT. MICHIGAN, ASSIGNOR TO MICHIGAN STOVECOMPANY, OF DETROIT, MICHIGAN.

SAFETY DEVICE FOFf GAS-STOVES.

No. soasec.

Specification of Letters Patent.

Patented Oct. 31, 1905.

Application filed May 7. 1904. Serial No. 206,826.

v citizen of the United States, residing at Detroit, county of l/Vayne,State of Michigan, have invented a certain new and useful Improvement inSafety Devices for Gas-Stoves; and I declare the following to be a full,clear, and exact description of the invention, such as will enableothers skilled in the art to which it pertains to make and use the same,reference being had to the accompanying drawings, which form a part ofthis specification.

This invention relates to stove-door catches, and has for its object animproved catch intended to be used with the doors of gas-stoves.

It sometimes happens in the use of gasstoves that the oven fills withgas and explodes, and if the oven-door has been caught under a securecatch an explosion of this kind injures and frequently destroys thestove; and the object of this invention is to produce a catch which willhold the door to place with sufiicient strength for ordinary uses, butwhich will yield and allow the door to open in case of an accumulationof and explosion of gas in the oven, so that the stove will not beinjured, but the door will merely be thrown open.

In the drawings, Figure l is a perspective showing a portion of the sideof a stove with the door hinged thereto and in its closed position. Fig.2 is a plan View of the catch and the latch on the door; Fig. 3 is aplan view of the' catch and the latch on the door in a position in whichthe latch is shown as partly withdrawn from its securing position. Fig.A is a side elevation of the catch and latch. Fig. 5 is a side elevationof a somewhat modified form.

The catch is preferably made double of a sheet of spring material, bentto form a triangular frame with rentering flanges at the end of theangles of the frame.

' rIhe side l of the strip of metal of which the catch is formed engagesagainst the side of the stove, to which it is secured by bolts or screws2 and 3. Both ends of the strip are bent forward and toward each otherand each -end is again bent backward or inward towardv the straight partl of the strap of metal. The inbent ends 4 and 5 are spaced by adistance somewhat less than the latch which is to engage between themand their extreme inner ends diverge, making a seat between the extremeterminals 4l and 51 in which the end of the latch is received. The latch6 projects beyond the door 7 and engages between the inbent flanges Land 5 of the catch. The extreme diverging ends force the door to itsseat.

At the turns or angles where the branch A f bends inward from the part 9and where the l branch 5 bends inward from the part l0 the angle orcorner is rounded and the rounded terminal 6 of the latch engagesbetween the branches 4 and 5 at this rounded part and spreads thebranches .4 and 5 when the latch travels through from the entrance 12 toits seat between the terminals 41 and 5l. The catch is made of materialthat is sufiiciently resilient to permit the two arms to spread in theway described.

In the form shown in Fig. 5 a catch with a single member is used, and inthis the body part ll is arranged vertically on the stoveframe. The part91, corresponding to the part 9 of Fig. 2, extends directly forward on asubstantially horizontal line. The branch 42 angles toward the catch 6l,which engages under the terminals 43.

The door itself is preferably of the character known as a drop-door heldon hinges having horizontal pintles and is provided with spring liftingor cushioning devices which are of common and ordinary construction, butwhich coact with the catch and latch to prevent the force of anypossible explosion from throwing the door forcibly down and breaking thehinges or bearings.

Should gas accumulate in a stove furnished with this appliance andexplode, the first force of the explosion is expended in opening thespring-catch, and during the time of movement of the door, while thecatch is passing through between the parallel branches 4 and 5, theconfined gas escapes around the edges of the door, and usually the dooritself will not be blown entirely open. If, however, the explosion issufiicient to throw the door entirely out, it drops open as easily asthough opened by hand and neither injures the stove itself or any personwho may be standing near at hand.. Burning gas in not driven directlyout into the room, but to the front and back of the stove, and is notliable to come in contact with the persons working around the stove.

IOO

What I claim is- 1. In combination with an oven-door provided withhinges located at the bottom thereof, said hinges having` horizontalpintlcs, springs tending to close the door, a springcatch and a latchengaging said catch with a prolonged t'rictional holding engagementwhereby thc door is permitted to yield in an opening direction,substantially as described.

2. In combination with an oven, adrop-door `hinged along its lower edge,cushioningsprings therefor adjacent to said edge, a latch on the upperedge, and a resilient catch attached to the oven-wall at a point toengage the latch when the door is closed and adapted to yieldin gl yoppose its passage therethrough when said door is intermediate thepositions RICHARD R. CALLAN.

Witnesses:

WV. J. KEEP, GEO. L. RENO.

